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// s_only.cpp
/* Copyright 2009 10gen Inc.
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License, version 3,
* as published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Affero General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*
* As a special exception, the copyright holders give permission to link the
* code of portions of this program with the OpenSSL library under certain
* conditions as described in each individual source file and distribute
* linked combinations including the program with the OpenSSL library. You
* must comply with the GNU Affero General Public License in all respects
* for all of the code used other than as permitted herein. If you modify
* file(s) with this exception, you may extend this exception to your
* version of the file(s), but you are not obligated to do so. If you do not
* wish to do so, delete this exception statement from your version. If you
* delete this exception statement from all source files in the program,
* then also delete it in the license file.
*/
#define MONGO_LOG_DEFAULT_COMPONENT ::mongo::logger::LogComponent::kSharding
#include "mongo/pch.h"
#include "mongo/client/connpool.h"
#include "mongo/db/auth/authorization_manager.h"
#include "mongo/db/auth/authorization_manager_global.h"
#include "mongo/db/auth/authorization_session.h"
#include "mongo/db/auth/authz_session_external_state_s.h"
#include "mongo/db/commands.h"
#include "mongo/db/dbhelpers.h"
#include "mongo/s/client_info.h"
#include "mongo/s/grid.h"
#include "mongo/s/request.h"
#include "mongo/s/shard.h"
#include "mongo/util/log.h"
#include "mongo/util/concurrency/thread_name.h"
/*
most a pile of hacks to make linking nicer
*/
namespace mongo {
void* remapPrivateView(void *oldPrivateAddr) {
log() << "remapPrivateView called in mongos, aborting" << endl;
fassertFailed(16462);
}
/** When this callback is run, we record a shard that we've used for useful work
* in an operation to be read later by getLastError()
*/
void usingAShardConnection( const string& addr ) {
ClientInfo::get()->addShardHost( addr );
}
TSP_DEFINE(Client,currentClient)
Client::Client(const string& desc, AbstractMessagingPort *p) :
ClientBasic(p),
_desc(desc),
_connectionId(),
_god(0),
_lastOp(0),
_shutdown(false) {
}
Client::~Client() {}
bool Client::shutdown() { return true; }
void Client::initThread(const char *desc, AbstractMessagingPort *mp) {
// mp is non-null only for client connections, and mongos uses ClientInfo for those
massert(16478, "Client being used for incoming connection thread in mongos", mp == NULL);
verify( currentClient.get() == 0 );
string fullDesc = desc;
if ( str::equals( "conn" , desc ) && mp != NULL )
fullDesc = str::stream() << desc << mp->connectionId();
setThreadName( fullDesc.c_str() );
Client *c = new Client( fullDesc, mp );
currentClient.reset(c);
mongo::lastError.initThread();
c->setAuthorizationSession(new AuthorizationSession(new AuthzSessionExternalStateMongos(
getGlobalAuthorizationManager())));
}
string Client::clientAddress(bool includePort) const {
ClientInfo * ci = ClientInfo::get();
if ( ci )
return ci->getRemote().toString();
return "";
}
// Need a version that takes a Client to match the mongod interface so the web server can call
// execCommand and not need to worry if it's in a mongod or mongos.
void Command::execCommand(OperationContext* txn,
Command * c,
int queryOptions,
const char *ns,
BSONObj& cmdObj,
BSONObjBuilder& result,
bool fromRepl ) {
execCommandClientBasic(txn, c, *txn->getClient(), queryOptions, ns, cmdObj, result, fromRepl);
}
void Command::execCommandClientBasic(OperationContext* txn,
Command * c ,
ClientBasic& client,
int queryOptions,
const char *ns,
BSONObj& cmdObj,
BSONObjBuilder& result,
bool fromRepl ) {
std::string dbname = nsToDatabase(ns);
if (cmdObj.getBoolField("help")) {
stringstream help;
help << "help for: " << c->name << " ";
c->help( help );
result.append( "help" , help.str() );
result.append("lockType", c->isWriteCommandForConfigServer() ? 1 : 0);
appendCommandStatus(result, true, "");
return;
}
Status status = _checkAuthorization(c, &client, dbname, cmdObj, fromRepl);
if (!status.isOK()) {
appendCommandStatus(result, status);
return;
}
c->_commandsExecuted.increment();
std::string errmsg;
bool ok;
try {
ok = c->run( txn, dbname , cmdObj, queryOptions, errmsg, result, false );
}
catch (DBException& e) {
ok = false;
int code = e.getCode();
if (code == RecvStaleConfigCode) { // code for StaleConfigException
throw;
}
stringstream ss;
ss << "exception: " << e.what();
errmsg = ss.str();
result.append( "code" , code );
}
if ( !ok ) {
c->_commandsFailed.increment();
}
appendCommandStatus(result, ok, errmsg);
}
}
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